Initial commit

typo3conf/ext/vhs/Classes/ViewHelpers/Media/ExtensionViewHelper.php

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+<?php
+namespace FluidTYPO3\Vhs\ViewHelpers\Media;
+
+/*
+ * This file is part of the FluidTYPO3/Vhs project under GPLv2 or later.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.md file that was distributed with this source code.
+ */
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+/**
+ * Returns the extension of the provided file
+ *
+ * @author Björn Fromme <fromme@dreipunktnull.com>, dreipunktnull
+ * @package Vhs
+ * @subpackage ViewHelpers\Media
+ */
+class ExtensionViewHelper extends AbstractViewHelper {
+
+	/**
+	 * Initialize arguments.
+	 *
+	 * @return void
+	 * @api
+	 */
+	public function initializeArguments() {
+		$this->registerArgument('file', 'string', 'Path to the file to determine extension for.', FALSE);
+	}
+
+	/**
+	 * @return string
+	 */
+	public function render() {
+
+		$filePath = $this->arguments['file'];
+
+		if (TRUE === empty($filePath)) {
+			$filePath = $this->renderChildren();
+
+			if (NULL === $filePath) {
+				return '';
+			}
+		}
+
+		$file = GeneralUtility::getFileAbsFileName($filePath);
+
+		$parts = explode('.', basename($file));
+
+		// file has no extension
+		if (1 === count($parts)) {
+			return '';
+		}
+
+		$extension = strtolower(array_pop($parts));
+
+		return $extension;
+	}
+
+}